Straining wheel



Fume 3 1924.

` 1,496,517 M. E.: BOEHM STRAINING WHEEL Filed June 16 .v 1921 Patented.lune 3, 1924. y

' STATES MAXIMILIAN EUGENE BO'EHM, 0F NEENAH, WISCONSIN.

SVTRAINING WHEEL.

Application led June 16, 1921.

T 0 all whom t may concern.' i

Be it known that I, MAXIMILIAN EUGENE BoEHM, a citizen of the UnitedStates, residing at Neenah, county of Winnebago, and State of Wisconsin,have invented new. and useful Improvements in Straining Vheels, of whichthe. following is a specification..y

This invention relates to straining wheels and is particularly directedto straining wheels as associated with pulp beating engines or machines..y r

The objects of this invention arek to provide a machine which willexpedite vthe delivery of. water from,r the washing .ta-nk; which willpresent a larger* surface to the water; which will remove water inlarger quantities or at a faster rate than machines heretofore vmade;which.. is so shaped and proportioned that it will enter the waterwithout jar and without wedging the pulp or otherwise obstructing itsfree passage; and to provide such a machine which is selfpropelling.

Further objects are to provide a straining wheel for pulp beatingengines in which the sides of the wheel are made of removable sectionsso that when any side becomes worn or damaged it may be readily removedand a new one substituted; and to provide such a straining wheel whichmay be cheaply and readily manufactured, and which will be sturdy andrugged in construction.

An embodiment of the invention is shown in the accompanying drawings, inwhich:

Fig. 1 is a plan view of a pulp beating engine.

Fig. 2 is a side view o-f a straining wheel with parts broken away.

Fig. 3 is an end view of one of the straining wheels with parts brokenaway.

In the drawings, the washing tank is generally oval in contour, and hasa widened portion 1 within which a beater 2 is adapted to operate.

This tank has a constricted portion 3 within which a series of strainingwheels are. positioned. A supply pipe f1 is adapted to deliver waterinto the washing tank.

The straining wheels are mounted upon hollow hubs 5 which are carried insuitable bearings 6 upon opposite sides of the constricted portion 3 ofthe tank. An open trough extends through each of these wheels and isprovided with an upwardly extending rear face 8 upon the side towardswhich the water approaches in its normal travel Serial No. 477,925.

around the oval shaped tank. From these hollow hubs a series ofsubstantially triangular shaped panels 9 extend outwardly and arejoined. at the central outer portion of the wheel as indicated at 10 inFig.l 3. These panel sections4 are formedfof wire cloth which isreenforced'around its j edges by means of bands 11. These bands 11 areprovided with a series of openings through which the attaching screwsmaypass so as to removably position yeach panel with respect to theother panels. It will therefore be `Vseen that the kwheel consists ofapproximatelyV two frustro-conical portions with their largerperipheries joined. Within the wheel a series of troughs 12, V -shape inplan, are positioned such troughs having a relatively depressed portion13 intermediate their ends to provide a bottom 14, 4V-shap'e in sideelevation.

A series of vanes 15 are secured upon the outer sides of the wheel. Y

The operation of the apparatus is as follows. When the machine is inoperation the pulp and water travel at a relatively high rate around theoval shaped tank, the speed being relatively greater through theconstricted portion 3 than through the relatively wide portion 1. Due tothe vanes 15 and also due to the frictional engagement of the water withthe sides of the wheel, the wheels are each rota-ted in the directionindicated in Fig. 2. This rotation of the wheels causes the buckets 12to be successively lifted on the ascending side of the kwheel and todischarge the water held therein into the trough 7, the elongated rearportion 8 of such trough preventing the splashing of the waterrearwardly over the trough. It is to be notedk that the taperedformation of the straining wheel allows such wheel to readily enter thepulpy mixture without clogging and without splashing. It is also to benoted that by staggering the wheels as illustrated in Fig. 1 that thewater is removed from a number of spaced apart portions of the {iowingstream and that a relatively compact apparatus may be provided as thetapered formation of the wheels allows them to be closely spaced. Afurther feature to be noted is that the blades 15 tend to agitate theliquid when entering therein and receding therefrom.

Y It will thus be seen that an apparatus has been provided which willreadily and rapidly remove the water from the pulpy mass;

which will not clog; and which is self-pro pelling, thereby vgreatly,simplifying the mechanical construction of the pulp beater.

`While the machine has been specifically described with re'ferencetopulp beating niachines, it is of course obvious that it vmay be used forother purposes, such for example, in Washing of various fibroussuspended Inaterial o1' in any capacity Where it is desired to removeliquid frein suspended or ,partly suspended ysolid material.

I ,Ch-im:

l. A straining nilieel orseparating Water from ysolid suspended materialcomprising a Wheel formed of foraminous vmaterial and provided with aseries rof Paddles and in- -teriorly positioned buckets, said paddlesbeing adapted t-o rotate lthe straining/wheel ,arid to agitata the Waterandsuspended ma- 20 xterial when entering therein and recedingtherefrom.

y2. A straining Wheel adapted to remove liquid roma mixture containingsuch liquid and suspended solid material, said Wheellcomprising,substantially ilustre-conical sections formed of. oraminousmaterial with their largerperlpheries Joined, a series lof paddlescarried .by the outer portion .of said :said Wheel and a series ofpaddles arranged exteriorly thereof adjacent its periphery, said paddlesbeing adapted to rotate the straining Wheel.

4f. A Pulp beating machine -complrsilg 2L tank adapted to `provide acontinuous path of travel for ,pulp and Water, rmeans forsupplying Watery.to said tank, means Ainroadsinggsaid pulp and Water to travel in aclosed path, a series of straining- Wheels :mounted in staggeredrelation Within a portion vof said pat-li and .comprising .Teach a pairEof frustro-conical sections provided With propelling ,venes withinterior buckets.; and a serieso open troughs-passing throughsaid Wheels`and adapted to receive liquid .elevated by said ,troughs and dischargesuch liqiid outwardly beyond fthe outlinesojl said tan r.

MAXMlLIAN EUGENE BOEHM-

